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Title: Damage mode identification of open hole composite laminates based on acoustic emission and digital image correlation methods
Authors: Özaslan, E.
Yetgin, A.
Acar, Bülent
Güler, Mehmet Ali
Keywords: Acoustic emission
Carbon/Epoxy laminates
Damage mechanism
Digital image correlation
Hole interaction
Issue Date: 2021
Publisher: Elsevier Ltd
Abstract: This paper focuses on damage mode identification of composite laminates based on acoustic emission and digital image correlation methods. The effect of different fiber/matrix materials on the damage progression of quasi-isotropic laminates with one open hole was investigated first. The effect of different hole orientations with respect to load direction on the damage mechanism of laminated composites with two interacting holes was studied next. For this purpose, correlation and Principal Component Analyses (PCA) were performed to select the most effective acoustic emission (AE) parameter in clustering. After performing PCA, peak frequency parameter was selected to cluster acoustic emission signals due to its great contribution to the principal component. Damage mechanisms were identified based on cumulative counts and energy parameters of AE events for both aspects mentioned above. The findings of the AE measurement were successfully verified by digital image correlation (DIC) measurements. © 2021 Elsevier Ltd
ISSN: 0263-8223
Appears in Collections:Makine Mühendisliği Bölümü / Department of Mechanical Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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